Comment 5 for bug 41794

I would say it all depends on what your configuration looks like. In one case you may have some openvpn bits lying on a NFS or CIFS mount, so you prefer to unmount those at the very last time. In another case you established an NFS or CIFS mount over your OpenVPN tunnel, and you prefer to shutdown the network filesystems before you shutdown OpenVPN itself.

If you are in the second case, you should probably leverage the down and down-pre options of OpenVPN to close the NFS/CIFS filesystems you opened over the tunnel before you shutdown OpenVPN...